In Pictures: Windows Server 8 - Ten features manag...
Simplified Live Migration
One of the biggest drawbacks of virtual machines in Hyper-V with previous versions of Windows was that migrating a virtual machine from one place to another was a clumsy process that could be both frustrating and time consuming. Windows Server 8 makes it much easier to migrate a running virtual machine in Hyper-V without interrupting productivity.
In Pictures: Windows Server 8 - Ten features managers will love